Yes, flip is needed, because you are currently drawing to the BackBuffer and need to FLIP it to the front.
Also, you might want to add the following to the end:
[code]
While not keydown(1)
wend
End
[code]
this will wait for escape to be pressed before closing the program.
Also, you might want to add the following to the end:
[code]
While not keydown(1)
wend
End
[code]
this will wait for escape to be pressed before closing the program.